Hi Drugar,
I have filed a CAR (43K9NBF2) regarding this issue. I will look into fixing it for the next version of the Report Generation Toolkit. If you want to workaround the problem for now, go into vi.lib\addons\_office\word.llb\Word_auto_text_entry (for page number).vi. You can get a reference to the "Selection" property of the Application class. Then under Selection, get a reference to "ParagraphFormat". Then, you can set the "Alignment" property of the ParagraphFormat class.
Thanks for reporting this issue, and let me know if you have any other questions.
-D